To make brown gravy you need 2 tablespoons of butter, a cup of canned beef bouillon, 2 tablespoons of flour and a dash of salt and pepper. Melt the butter in a saucepan and stir in the flour. Cook for a minute or two over heat and add bouillon. Continue to stir until the gravy boils and then continue until it thickens. You can substitute the beef bouillon for pan drippings and water to make a cup.
Brown gravy takes a close eye and patience to make from scratch. Few ingredients are needed. Brown gravy consists mainly of beef stock or pan drippings, water, milk, flour, and salt and pepper to taste. The simple instructions and measurements are available at http://allrecipes.com/recipe/old-fashioned-brown-gravy/.
To make a thin gravy, use 1 tablespoon of oil or butter, 1 tablespoon of flour, and 1 cup of liquid. For medium gravy, use 2 tablespoons of oil or butter, 2 tablespoons of flour, and 1 cup of liquid. For thick gravy, use 1/4 cup of oil or butter, 1/4 cup of flour, and 1 cup of milk. For specific gravies, visit http://www.bettertimesinfo.org/gravy.htm.